Ferdinand I
Ferdinand I or Fernando I may refer to:
People
- Ferdinand I of León, the Great
- Ferdinand I of Portugal and the Algarve, the Handsome
- Ferdinand I of Aragon and Sicily, of Antequera
- Fernando I, Duke of Braganza
- Ferdinand I of Naples
- Ferdinand I, Holy Roman Emperor
- Ferdinando I de' Medici, Grand Duke of Tuscany
- Ferdinand, Duke of Mantua and Montferrat
- Azim ud-Din I of Sulu, briefly converted to Christianity under the name Ferdinand I
- Ferdinand I, Duke of Parma, Piacenza and Guastalla
- Ferdinand I of the Two Sicilies
- Ferdinand I of Austria
- Ferdinand I of Bulgaria
- Ferdinand I of Romania
Places
- Ferdinand I or Regele Ferdinand, the former name of two Romanian communes:
- * Mihail Kogălniceanu, Constanța
- * 1 Decembrie, Ilfov County